I 400x400x25x40 IAS · Weight & Dimensions

IAS, welded sections · Wide Flange (I-beam)

Wide flange beams (W shapes / I-beams) are the most common structural steel profile used in building construction. They are used for beams, columns, and girders in steel-framed buildings and bridges. Designed per AISC 360, Eurocode 3, and NBR 8800.

Put the I 400x400x25x40 IAS in a real structure

Opens in the 3D editor already set up as a beam, with supports and load. Change the span and the load, then check it against the code.

Free, and it opens without signing up.

Also known as: I 400x400x25x40 (México) · Doble T I 400x400x25x40 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x400x25x40 steel profile weighs 314.0 kg/m (211.01 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 40,000 mm². Moment of inertia Ix = 110,933.333 cm⁴, Iy = 42,708.333 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	400 mm	15.75 in
Web thickness (tw)	25 mm	0.98 in
Flange thickness (tf)	40 mm	1.57 in
Weight	314.0 kg/m	211.01 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	40,000 mm²	62.000 in²
Moment of inertia (Ix)	110,933.33 cm⁴	2665.17 in⁴
Moment of inertia (Iy)	42,708.33 cm⁴	1026.07 in⁴
Elastic section modulus (Sx)	5,546.67 cm³	338.480 in³
Elastic section modulus (Sy)	2,135.42 cm³	130.312 in³
Plastic section modulus (Zx)	6,400 cm³	390.554 in³
Plastic section modulus (Zy)	3,250 cm³	198.328 in³
Radius of gyration (rx)	16.65 cm	6.556 in
Radius of gyration (ry)	10.33 cm	4.068 in